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choli [55]
3 years ago
6

How to solve using perfect square x^2-4x-32=0

Mathematics
1 answer:
zmey [24]3 years ago
5 0
Perfect\ square:(a-b)^2=a^2-2ab+b^2\\\\x^2-4x-32=0\ \ \ \ |add\ 32\ to\ both\ sides\\\\x^2-4x=32\\\\x^2-2x\cdot2=32\ \ \ \ |add\ 2^2\ to\ both\ sides\\\\x^2-2x\cdot2+2^2=32+2^2\\\\(x-2)^2=32+4\\\\(x-2)^2=36\iff x-2=-\sqrt{36}\ or\ x-2=\sqrt{36}\\\\x-2=-6\ or\ x-2=6\ \ \ \ |add\ 2\ to\ both\ sides\\\\\boxed{x=-4\ or\ x=8}
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What is the estimated difference? Round each number to the nearest hundred thousand before finding the difference? 3,661,528 – 1
solmaris [256]
3,700,000-1,700,000=2,000,000
6 0
3 years ago
HELP WILL MARK BRAINLIEST
swat32

Answer:

<h2><u><em>207.35</em></u></h2>

Step-by-step explanation:

8 0
3 years ago
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Whats the difference between a subset and a proper subset? {5,8} {2,5,8} Is {5,8} a subset of {2,5,8}.
valina [46]

Answer:

\{5,8\} is a subset of \{2,5,8\}

Step-by-step explanation:

Required

Difference between subset and proper subset

To answer this question, I will use the following illustration.

A = \{1,2,3\}

B = \{2,3\}

C = \{1,2,3\}

In the above sets, set B is a proper subset of set A because all elements of B can be found in A, but not element of A can be found in B.

Set C is a subset of A because A = C

Using the above illustration, we have:

\{5,8\} and \{2,5,8\}

\{5,8\} is a subset of \{2,5,8\}, because 5 and 8 are in \{2,5,8\} but 2 which ca be found in \{2,5,8\} is not in \{5,8\}

8 0
2 years ago
Solve 5/8+3/4 -2/3-5/6
alexira [117]

Answer:

-.125

Step-by-step explanation:

5/8 + 3/4 solve

2/3 - 5/6 solve

then subtract your numbers

3 0
3 years ago
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okay, genuinely does anyone know how this work? if you do could you please explain how you get the answer-
fomenos

Answer:

The pdf is not showing anything

Step-by-step explanation:I would help you otherwise.I am sorry.Don't let this get you down.I hope you have a good day.

4 0
3 years ago
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